This custom linear Hall effect sensor is a perfect example ... There’s clearly a long way to go to tighten things up, but the basic mechanism looks like a clear win to us. Hats off to [Nixieguy ...

As the cam mechanism turns, the linear motion is repeated over and over ... A cam mechanism is made up of three main parts: a cam, a follower and a slide. Cams can be different shapes.

[Andy Pugh] found himself in need of a large linear slide, so he resorted to making his own with steel square tubing and a bit of PTFE (Teflon). The PTFE slider/spacers [Andy] needed a compact ...